Idy-roll



(No Model.) V

W. D. STEVENS.

DANDY ROLL.

Patented July 31, 1888.

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Warren STATES a'rnnr Genres,

WELLINGTON D. STEVENS, OF SPRINGFIELD, llTASSAGHUSETTS.

DANDY -ROLL.

SPECIFICATION forming part of Letters Patent No. 387,118, dated July 31,1888.

Application filed December 27, 1887. Serial No. 250,018. (No model.)

T0 at 1071 0727, it may concern:

Be it known that I, WELLINGTON D. STE- VENs, a citizen of the UnitedStates, residing at Springfield, in the county of Hampdcn and State ofMassachusetts, have invented new and useful Improvements in Dandy-Rolls,of which the following is a specification.

This invention relates to improvements in the construction ofdanrlyrolls, the purpose of which being to secure for the usual outlyingwinding wire-gauze a support which will be most firm and rigid andpermitting, of no yielding under transverse force; and it consists inthe combination and arrangement of the va rious parts of the roll, allsubstantially as will be hereinafter more fully described, and set forthin the claim.

In the accompanying drawings, Figure 1 is a side view of the rollstructure with intermediate portions ofthe longitudinal rods broken awayfor better illustration, and showing a portion of the circular windingwires and coveringgauzc thereon. Fig. 2 is a longitudinal section of theroll-frame, but showing only one truss-rod in full lines, a truss-rodwhich is 0ppositely secured therein being indicated by dotted lines.Fig. 3 is a cross-section of the dandy-roll, showing but one truss rod,however; and Fig. 4 is a view at one of the roll heads.

As in other similar rolls, the present dandyroll comprises two heads, AA, provided with, journals, aseries of parallel longitudinal rods, B B,extending between and by their ends so cured to said heads, a series ofrings, 0 O, located within said rods, and to the outer peripheries ofwhich rings said rods are attached, and a series of truss or brace rodsextending from head to head of the roll for maintaining and supportingsaid rings, and the whole is to be covered by a series of circular orwinding wires, a, and wire-gauze b,- and it is in the peculiar andimproved arrangement of the trussrods that the present inventionparticularly consists.

In the present roll I employ eight truss rods, designated by the figuresl to 8, inclusive, each provided at one end with ahead, (7, its otherend being screw-threaded, with and upon which a nut, f, engages, andeach trussrod is passed through one head or end plate A and extends toand through the opposite head, passing thereto in a gradual or extendedhelical line, reaching the opposite head at a point thereofdiametrically opposite to that from which it left the first-named head,and being at all points in its length at equal distances from the axialline of the roll; and the alternate truss-rods extend at an angle tothose of the truss-rods intermediate thereof, crossing at some point intheir course, and, as will be more clearly understood on reference tothe drawings, Fig. 2, in which only two truss-rods, 1 and 5, areshown,each leaving diam etricallyopposite points of one head,following agradual helical line,and reaching the opposite head at a pointdiametrically opposite each other; and again in Fig. 4 the positions ofthe ends of several truss-rods at the head are indicated by the figures1 to 8, arranged in the outer circle, the arrows indicating theirhelical direction, and the figures 1 to 8 arranged in the inner circleindicate the points at which said trussrods meet and are secured at theopposite head of the roll, and each truss rod lies upon the intermediaterings, 0 O, and is stayed thereon by suitable securing meansas, forinstance, by providing perforated ear-pieces g, as inward extensions onsaid rings, through which the truss-rods pass; and it is preferred whenthe said trussrods have been strained up as desired, to apply solder atthe place of engagev ment of the said rods and rings, as also at theplaces of intersection of one rod with another, principally for thepurpose of preventing any rattling of the adjacent parts; and, as wellknown in practice, a metallic truss-rod in constructions of thecharacter described, after having been in use for a certain time losesmore or less of its tensional strain, therefore when the truss -rods ofthe dandy-roll herein described require to have any slackness that theymay have acquired through the use of the roll taken up by operating thenuts on the ends of the rods, the herein-described soldered connectionsbetween said truss-rods and the rings of the rolls through which theypass are removed, and aft-er said rods shall have been satisfactorilystrained by turning the nuts the said soldered connections are againmade; and, although, as shown, each truss-rod is at one end headed andat its other end screw-threaded to receive a strainingnp nut, to formeach end of the rods screw-threaded practicable to have each truss-rodfollow a helical course to encompass in the length of the roll one-halfof its circumference, its helical direction may be made more gradual toencompass a lesser portion of the circumference, or less gradual. toencompass in its course a greater portion of the circumference of theroll than as described, as might be advantageous in the construction ofrolls of different lengths.

The construction and arrangement of the truss rods, substantially asdescribed, is most advantageous,efficient,and practical, the same beingmost effectivein securing positive rigidity andfirmness to theroll-structure in a most 20 obstructed, the series of trussing-rods, ashas been hereinbefore particularly described, be-

ing arranged in the form of an annulus, and the roll is comparativelycheap and exceedingly durable.

What I claim as my invention is A dandy-roll frame consisting of twoheads, A A, a series of outer longitudinal rods eX- tending between andsecured to said heads, a series of rings, 0, located within said rods,to the outer peripheries of which said rods are attached. a series oftruss-rods each at one end headed and at its other screw-threadedextending in helical lines, substantially as described, from head tohead, and passing therethrough, said trussrods being in engagement withsaid rings, and nutsf engaging with the screw-threaded ends of saidtruss-rods against the one head. substantially as described.

WELLINGTON D. STEVENS.

WVitnesses:

G. M. CHAMBERLAIN, H. A. OHAPIN.

